Electronic controller for vehicle
AssigneeHitachi Automotive Systems, Ltd.
InventorsYoshio Kawai, Eiji Ichikawa, Takayuki Fukuzawa
Life of this patent
Estimating the term…
Abstract
An electronic controller for a vehicle includes a circuit board on which an electronic component is mounted and a metal housing accommodating the circuit board therein. The housing includes an inner face and an outer face, at least one of the inner face and the outer face being subjected to surface treatment facilitating heat absorption and dissipation. The inner face of the housing further includes a protruding portion extending to a heating portion of the circuit board so as to be close to the heating portion, or includes concavities and convexities at at least a part thereof opposed to a surface of the circuit board on which the electronic component is mounted so as to increase a surface area of the inner face.
Claims17
An electronic controller for a vehicle, comprising:
- a circuit board on which an electronic component is mounted;
- and
- a housing made of metal which accommodates the circuit board therein, the housing including at least one of an inner face and an outer face having an applied or electro-deposited alumite surface treatment thereon, facilitating heat absorption and dissipation, and the inner face including a protruding portion extending to a heat-generating portion of the circuit board so as to be close to the heat-generating portion;
- wherein:
- the housing includes:
- a main body including a recessed portion to accommodate the circuit board;
- and a lid to close an opening of the main body;
- the heat-generating portion is a heat-generating element mounted on the circuit board;
- and
- the protruding portion is integral with an extending portion extending toward the heat-generating element so as to cover at least a part of a side wall of the heat-generating element.
An electronic controller for a vehicle, comprising:
- a circuit board on which an electronic component is mounted;
- and
- a housing made of metal which accommodates the circuit board therein, the housing including at least one of an inner face and an outer face having a surface treatment facilitating heat absorption and dissipation, and the inner face including a protruding portion extending to a heat-generating portion of the circuit board so as to be close to the heat-generating portion;
- wherein the housing includes:
- a main body in the form of a box shape having an opening at one face;
- and a lid that closes the opening of the main body, the lid being integrated with the circuit board and being slidable relative to the main body of the housing to close the opening.
An electronic controller for a vehicle, comprising:
- a circuit board on which an electronic component is mounted;
- and
- a housing made of metal which accommodates the circuit board therein, the housing including at least one of an inner face and an outer face having an applied or electro-deposited alumite surface treatment thereon, facilitating heat absorption and dissipation, and the inner face including a plurality of concavities and convexities in at least a part thereof opposed to a surface of the electronic component so as to increase a surface area of the inner face, which opposes the surface of the electronic component;
- wherein the plurality of concavities and convexities are shaped so as to improve at least one of melt flow during casting of the housing and stiffness of the housing.
Dependencies are inferred from the claim text.